AL-1457 (serv.man12). Sect.7 Operational Descriptions - Sharp Copying Equipment Service Manual (repair manual). Page 8

AL-1457  OPERATIONAL DESCRIPTIONS  7 - 8

1) When SPPD is ON (document remaining) when the power is

turned on.

2) When SPPD is not turned ON within about 1.5 sec (at 100% copy)

after starting the document feed operation.

3) When SPPD is not turned on within about 4.7 sec (at 100% copy)

after turning on SPPD.

4) When the SPF document jam release door or the OC cover is

opened during document transport (SPF motor rotating).

SPID ON

PSW ON

MIRM rotation

MM rotation

CPFS ON

SPFM rotation

SPUS ON

Document set

Document set sensor

Document feed unit lamp ON

PPD ON

RRC ON

SPPD ON

POD ON

Copy start

The scanner is shifted
to the exposure position.

(Copier side)

Main motor rotation

Paper feed

Synchronization

(Transfer)

(Fusing)

(Document exit)

Paper transport

(Exposure)

In the zooming mode, the magnification ratio in the sub 
scanning direction (paper transport direction) is adjusted
by changing the document transport speed.

(Paper exit)

SPF motor rotation

Document feed

Document transport sensor

Document transport

(SPF side)

Time chart (Tray feed)

752msec

625msec

756msec

PSW

MIRR M

SPF M

CL

SPUS
SPPD

SCANST

MAIN M

CPFS1

RRS
PPD1

PPD2

POD